Deep-trench survey run. Find the light, bring it back.
Goal: recover all 12 glowing specimens, then fly into the
lit extraction shaft to surface. Win = all specimens + shaft.
Lose: oxygen runs out, or the hull takes 100 damage from
jellyfish and rock impacts. Jellyfish sting; rocks scrape.
Glow rings refill oxygen.
Controls: W/S thrust · A/D or ←/→ turn · ↑/↓ climb & dive ·
SPACE boost · F sonar scan (widens the grab radius and calls the
specimens to you). Drag the mouse to steer. Touch: on-screen buttons.